> However, in a large enough context you can remove buildings and move roads etc. Pittsburgh isn't flat, many times it is not "move this road." It's bore throu

> However, in a large enough context you can remove buildings and move roads etc. Pittsburgh isn't flat, many times it is not "move this road." It's bore through this mountain, build this bridge, fix the drainage issues around this creek, etc. and fixing intersections almost always leads to more issues downstream.